| 摘要 |
<p>An EGR valve is disclosed. The EGR valve comprises: a housing; an opening and closing unit for opening or closing an exhaust gas flow path by vertical movement of a poppet, wherein the opening and closing unit has a poppet shaft and the poppet installed in a front end of the poppet shaft and is installed in the housing; a drive unit which vertically drives the poppet shaft for vertical movement of the poppet and is installed in the housing; and a cam drive unit for vertically moving the poppet shaft by receiving rotational force through intermediate gears. The cap drive unit comprises: a driven gear with an attached cam in which a cam part with a cam hole is integrated with a gear shaft, wherein the driven gear rotates while the driven gear is partially engaged with one intermediate gear among the intermediate gears; a roller plate coupled to the poppet shaft; and a roller moving along with the cam hole installed in the roller plate.</p> |
